// cypher2.c -- alters input, preserving non-letters
#include <ctype.h>  // for isalpha()
#include <stdio.h>

int main(void) {
  char ch;

  while ((ch = getchar()) != '\n') {
    if (isalpha(ch))    // if a letter
      putchar(ch + 1);  // display next letter
    else                // otherwise,
      putchar(ch);
  }
  putchar(ch);

  return 0;
}
